R Convert List to Lowercase
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Var1 is a list:
var1 <- list(c("Parts of a Day", "Time in Astronomy", "Star"), c("Tree Tall", "Pine Tree"))
How to convert all the characters to lowercase? The desired answer is the following list:
var1 <- list(c("parts of a day", "time in astronomy", "star"), c("tree tall", "pine tree"))
I used
as.list(tolower(var1))
But it gives the following answer with unwanted \
[[1]]
[1] "c(\"parts of a day\", \"time in astronomy\", \"star\")"
[[2]]
[1] "c(\"tree tall\", \"pine tree\")"
Thanks.
2 Answers
You should use lapply to lower case each character vector in your list
lapply(var1, tolower)
# [[1]]
# [1] "parts of a day" "time in astronomy" "star"
#
# [[2]]
# [1] "tree tall" "pine tree"
otherwise tolower does as.character() on your entire list which is not what you want.
Use gsub
gsub("/", "", var1)
as.list(tolower(var1))
this will remove all your / out of your variable.
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